Rotary duplicator



arch 5 1935.. v C. N, JOHNSON ET AL 1 99355 ROTARY DUPLICATOR FiledEfiarch 16, 1932 3 Sheets-Sheet '1 7 1771167715715 Clifford JV Jhnson-\fllfnzd \fflarcheu March 5, 11935. c, N. JOHNSON ET AL 3 9 ROTARYDUPLICATOR Filed March 16, 1932 3 Sheets-Sheet 2 ITIU'STIIZT'TS r gugulCZz'fford JV \Tohnson \fllfred kfflarched- March 5, 1935.

c. N. JOHNSON ET AL 1,993,556

ROTARY DUPLICATOR Fil ed March 16, 1952 3 Sheets-Sheet 3 Patented Mar.5, 1935 PATENT OFFICE ROTARY DUPLICATOR Clifford N. Johnson, Chicago,andyAlfred Marchev, La Grange, 111.;

porated, Chicago, Ill.

Virginia Application March 16, v w 20 Claims. I The invention relates torotary duplicators and more particularly is concerned with novelstructure-carried by the rotating drum for winding the gelatin bandproviding the duplicating surface for the drum. I 7

The type of rotary duplicator with which the present invention isconcerned has heretofore been equipped with a pair of spindlesjournalled in the drum at the respective ends of the printing bed orplaten for winding the end portions of the gelatin band, the same beingunwound from one spindle andwound upon the other with the platensupporting the section of the band in use. In the duplication of billsand'similar class of work where a relatively small number of copies arerequired frequent stopping of the operation'and actuation of thespindles is necessary in order to locate a clean surface of the gelatinband on the platen and considerable time has heretofore been consumed bythe operator in releasing the spindles for rotation rotating the sameand again locking the spindles, the operation generally requiring, theuse of aseparate tool. In order then to secure the highest operatingerficiency it is imperative that the actuation of the spindles be accompished with ease and that the-acts required be reduced to a minimum, andit is to the attainment of these ends that the present invention isparticularly directed.

Accordingly, an object of the invention is to provide a novelarrangement of elements for accomplishing the winding of the gelatinband and which will be actuated by the handle employed for rotating thedrum, the construction including additional features whereby the bandmay be- A further object is to provide novel means for impartingselective rotation to a pair of spindles journalled in the drum of theduplicator for the purposes described which will include a central shaftforming the supporting and actuating means for the drum and whereinbodily shifting of the shaft in an axial direction will determine thespindle selected.

A further object isto provide a construction for-rotating the spindlesin the drum of a duplicator by means of the actuating handle for thedrum, thereby rendering the handle capable of a dual function, thestructure accomplishing the task of winding the gelatin band with easeand facility although employing relatively few parts which will notreadily get out of order.

- A still further object is the provision of a geared- "relation betweena pair of spindles and. a central assignors to Ditto, Incora corporationof West 1922, Serial No. 599,124 ((31. 101-132) rotatable shaft suchthat selective rotation of the spindles will take place, depending onthe direction of rotation of the central shaft, a more'specific objectresiding in the construction ,of the pinions, which will function toassist the operator in bringing the desired pinions into meshingrotation.

With these and various other objects in view, the invention mayconsistof certain novel features of construction and operation as willbe more'fully described and particularly pointed out inthespecification, drawings and claims appended hereto.

In the drawings which illustrate an embodi-- ment of the device andwherein like reference characters are used to designate like parts-Figure l is a longitudinal vertical sectional View of a duplicatingmachine of the rotary type showing the drum equipped with the mechanismof the present invention; v I

Figure 2 is a transverse vertical sectional view taken substantiallythrough the center of the du-- plicator of Figure 1 as indicated bylines 2-2;

Figure 3 is a fragmentary vertical sectional View taken substantiallyalong line 3-3 of Figure 2 and showing the'manner of winding the ends ofthe gelatin band upon spindles;

Figure 4 is a detail sectional view taken on line 4-4 of Figure 1 andshowing the constructional form of the center pinion; and

.Figure 5- is a detail sectionalview taken on line 55 of Figure 2showing the means forretaining the pinin retracted position. t

The duplicator shown in Figure 1 comprises a pair of spaced framemembers 10 and '11 suit-' ably mounted on a base and held in spacedrelation principally by means of the center connecting member 12 boltedat 13 to the members. The members are provided with inwardly directedflanges 14 around their outer edges and have their inner opposedsurfaces formed with a plurality of bosses which provide bearings forrotatably mounting within the frames the mechanism forming theduplicator. This latter consists essentially in a pivoted paper,supporting tray 15, adjustably supported and actuated by meansof member16 so that the paper stock supported by the tray is brought into contactwith a rotating feed roller 17 mounted on shaft 18 and op.- erating toseparate the top sheet through cooperation with the paper stop 20. Thefed sheet is directed between the rotating drum and the rotatablymounted impression roller 21 and into contact with the margin bar 22which at the moment is located in position for receiving and registeringthe leading-edge of the Sheet After the duplicating operation has beenperformed the leading edge of the sheet is pressed between the strippingrollers 23 and 24 which operate in a manner to strip the sheet from theduplicating surface and deposit the same upon the receiving tray 25supported by the frame members in position for the purpose. Since theabove structure is more fully disclosed in the co-pending application ofJames K. Duncan and Cliflord N. Johnson, Serial No. 584,642, filed Jan.-uary 4, 1932, further discussion is considered unnecessary, sincesufiicient explanation of the manner of operationof rotary duplicatorshas been given to enable those skilled in the art to understand andappreciate the present invention.

As shown in Figure 2 the frame members 10 and 11 journal a rotarycylinder comprising spaced end members 26 and 27, each being formed withan inwardly directed flange 28 defining their peripheries and theflanges having secured thereto an arcuate plate 30 extending from pointssubstantially diametrically of the cylinder and forming the printingbed. To the end member 26 is suitably secured a gear 31 for driving theimpression roller 21 and a bearing 32, the latter being secured by bolts33 centrally of the member and receiving the inwardly directed end of asupporting shaft 34 which in turn is journalled for rotation in bushing35 positioned in the frame member 10. Arm 36 and handle 37 are securedto the outer end of shaft 34 and provides the means whereby the operatormay rotate the shaft and the drum. For supporting the other end of thedrum in frame member 11 the end member 27 has secured by bolts 38centrally thereof a bearing 40 which is non-rotatably secured by pin 41to shaft 42 journalled in bushing 43 positioned in the frame member. Thebolts 38 also secure to end member 27 in spaced relation with each otherand with the member a pair of earns 44 and 45 through which actuation isimparted to the paper supporting tray and margin bar in timed relationwith the rotation of the drum.

The gelatin band 48 supported upon the arouate plate 30 provides theduplicating surface for the drum and has its respective ends wound uponspindles 50 and 51 journalled in the drum. The spindles are of similarconstruction and are interchangeable, each being provided at their endswith flattened extensions 52 having a projecting pin 53. The spindlesare supported for rotation within the drum by studs 54 mounted inbushings 55 positioned in the end member 27 and by shafts 56 and 57rotatable in bearings 58 suitably secured in the end member 26, shaft 56being recessed at its inner end for receiving the extension 52 onspindle 50, while shaft 57 is similarly recessedfor supporting spindle51. In order to permit removal of the spindles from the drum studs 54can be withdrawn within bushings 55 by means of the knob 60 against thetension of the spring 61. When thus retracted the spindles are releasedfrom engagement with the studs and can therefore be withdrawn fromengagement with their shafts 56 and 57, permitting their removal fromthe drum.

The "invention is more particularly concerned with the provision ofmeans for rotating the spindles so that the gelatin bandcan be woundupon one and unwound from the other when it is desired to present -aclean portion of band upon the arcuate plate 30. Non-rotatably securedto shaft 34 is a pinion 62 having a cone portion 63, Figure 4, forengagement with arm 64 pivoted to end member 26 at 65. The pinionnormally has meshing engagement with pinion 66 non-rotatably secured tothe outer end of shaft 57 and which presents a ratchet 67 secured to itsface by screws 68 for engagement by pawl 70 formed on the arm 64. Thepinions are provided with teeth of spiral construction and from thedescription given it will be understood that upon rotation of shaft 34in a clockwise direction the pinion 62 will rotate pinion 66 and spindle51 to wind the gelatin band thereon.

Non-rotatably secured to the outer end of shaft 56 is a spiral pinion 71having suitably secured to its inner face the ratchet 72. A manuallyoperated lever 73 is pivoted to end member 26 at 74 and provides a pawl75 for engaging with the ratchet 72. The coil spring 76 maintains thearm 64 in position where the same engages the cone 63 in which positionpawl 70 is in engagement with the ratchet 67. In asimilar manner coilspring 77 maintains the arm 73 inposition where pawl 75 engages theratchet 72. Before rotation of the spindles can be effectivelyaccomplished the drum must be locked against rotation and accordinglythe pin 78 is released for location in aperture 80 in the drum. Member81, threaded in the frame member 10, receives the pin 78 and the knob 82secured thereto in a manner to permit the operator to retract the pinagainst the tension of the coil spring 83 and by locating the studs 84in grooves 85 the pin can be held in retracted position and releasedwhen desired.

From the foregoing it will be understood that when the operator desiresto wind the gelatin band upon spindle 51 it will be first necessary tolock the drum against rotation by means of pins 78 and rotate shaft 34in a clockwise direction, Figure 1, first releasing, however, pawl 75from engagement with ratchet 72 in order that the band may unwind fromspindle 50. To tighten the band upon the printing bed after a cleanportion has been suitably located thereon it is only necessary torelease arm 73 allowing pawl 75 to again engage the ratchet, thuslooking spindle 50 against rotation. Accordingly, continued rotation ofspindle 51 will tighten that portion of the band on the printing bed. Itwill be noted that during rotation of spindle 51 pawl 70 is continuouslyin engagement with ratchet 67, and thus the same can only rotate in adirection to wind the band thereon. For winding the band upon the drum50 the shaft 34 is rotated in a counter-clockwise direction and byreason of the spiral construction of the pinion teeth and since pinion66 can not rotate in a clockwise direction the pinion 62 will be bodilymoved, moving shaft 34 axially in a direction toward the right, Figure2. This shifting of the pinion and shaft functions to mesh pinion 62with'71 and to cause arm 64 through contact with the arm by the coneportion 63 to rock, releasing engagement of pawl 70 with pinion 67.Continued rotation of shaft 34 counter-clockwise will rotate pinion 71and the spindle 50 connected thereto to wind thereon the gelatin band,and since pinion 51 is released for rotation the band is free to unwindtherefrom. The operation required to tighten the band upon the printingbed is in'this case entirely automatic, it being only necessary torotate shaft 34 clockwise, the rotation disengaging pinions 62 and 71and causing pinion 62 to mesh with 66, rotating pinion 51 causingtheslack portion of the band to be Wound thereon. 1 1

By eliminating: the sliaft extending through: the drum increasedspace isavai-lable' for the-,- convolutionsof the band on the spindiesso thatgreater 'leng-th I of band-can: be carried the 1 drum. The inventionpermits, however, if desired,- the :use of a-single shaft-as the samewould operate-in the manner as desoribed with ref erence to sh'aft 34;which; in the embodiment di'sclosed; journals only :one end; member of.the: drum; It will be appreciated lthat the present structure."is-relati-vely'simple as the..partsem'- played have been: reduced. to a:minimum. and; although-the utility of 'the handle: hasibeen increasedits primary:- function'i of 1 rotating. the

- drumafor. performing 1 duplicatingeoperations has not been'destroyedor. altered ineanyimanner.

By=- thei.arrangementiof thevparts: in a manner", fon'convenientandzreadyjactuation by: the. centralislraft there -isiiprovided imeansfor: winding. thei :bandiwherein- .the :.minimum of: timeiiwill beconsumedaaszthe handle isiconven-ient and is. the instrument .most:desired since it eliminates addi-r tionali'structure: The change:from-the. opera-v tion of rotating the drum to thatoflrotatingithespindles iszeasily effectedisince aftert thezdrum has rbeen clocked theleveri 73.7 is in; position for releasing the? spindle :51) should; itbe desired to unwindfthe band fromzthati spindle; and: when the :;bandis 5130.56 wound: thereon the; operation. is? automatic-only: requiring.movement. of: the shaft. toward, th'ezright ato' bodily shiftvthe'pinion62 andrbyc reason of the spiralconstruction: of I the pinion: .te'ethmeshing :of .thel-pinions is ifacilitated. This latter feature isparticularly desirablerassit enhances-the efficiency of the structurewhen thepinions must be quicklyx engageda or disengaged :forztightening:the "band;

It .is5to1be: understood that we 1105110? wish 'to be: limited bytheexactembodiment :ofzthe: device showm-which is .merely:by;way ofillustration and. not limitation, aszvarious' and otherrformszofthedevicewillibenapparent:to those-skilled in the art without departingfronrithespirit of the invention-;=or: the scope of: the ;-claims.-

Wevclaim'r 1. A rotary duplicator'rincluding; frame" members;vv shaftsjournalled'fitherein and rotatably mountingt'aicylinder, aizplura'lityof spindles carried by the cylinder and having the ends of a band woundthereon, a crank arm secured to one shaft and providing means forrotating the cylinder, said latter shaft being rotatable independentlyof the cylinder for actuating the spindles to wind or unwind the bandtherefrom.

2. A duplicator including a drum mounted for rotation in frame members,spindles rotatably carried by the drum for winding the ends of aduplicating band thereon, a member mounted for rotation and for slidablemovement, and means for connecting the member with each spindle, thespindle connected being determined by slidable movement of the member.

3. A duplicator including a drum mounted for rotation in frame members,spindles rotatably carried by the drum for winding the ends of aduplicating band thereon, a shaft rotatable in one frame member andserving as part of the journalling means for the drum, said shaft beingmovable in an axial direction, and means for operatively connecting theshaft with each spindle to rotate a spindle upon rotation of the shaft,said selected spindle being determined by axial movement of the shaft.

4. A duplicator including frame members journalling a drum, a shaftrotatable in one member andl forming-x par-ti off the: joumailing:vmeans spindles acarried :by :"the:'= drum 1 forrwmd-iing 'theiendsvoftaiduplicating: band: thereomandr meanss for selectively" rotating?the-i spindles :in-w eluding a.- pinionti suitably connected with: each;5" spindle andza-ipinion adapted touimesh:therewith: mounted on; said::shaf.t, the. meshingsof desired? pinions being; accomplishedby;movement ofzthe': shaft in an axial directions.

:5. A2 duplicator: including: frame members; a i shaft zjournall'ed: inthe? members :for': supporting; a .idrum, ..axpair: of spindlesadetachably carriedzb the :drum andmountedfor :rotation; saidxspindlesF1 having: the ends of 2K? duplicating: band:.woundil thereon, aipinion'associated with: each:spindlee= 15.: a locking: member? preventing:rotation of, the; spindles inzone direction, ar pinionrpositioned ion.the shaft 5 and having; axial 1 movement 1 with -=thef1 shaftztotselectivelyimesh with-thafirst mentioned: pinions, said movementoccurring by rotation :of 207,, the shaft in a" certain direction when.thepinion in: meshuis locked against rotation; I

6. A zduplicator"including a drum mountedzzinr. framezmembers; a; shaftin-each frameand ihaving association with :itszadjacent' en'cl member.ofvther i drum for rotatably: supporting the zdrum';aidupliacatingrbandconi the drum; spindles-carried bythee drumiforwinding: the ends: ofthe band thereon, means on one" of said:shafts-for: actuatir'1g1-.'the-i spindles'at upon rotation thereof and:means for: 30,, positively Flocking I the drum: during? actuation 'ofifthe: spindles; v i

7 duplicator: including a; drum-amounted frame members: acshaftiin .eachframe-for rotatably "supporting its adjacent end "memberfof the a; drum,a duplicating band on the drum;-..spindles.- oarriedzby thecdrumiforwindingrthe'ends of the band: thereon-, means locking; each'spind'le:against: 1 rotation:inionezdirectiony means-'oneone of said: shafts ifOIJ rotating-the spindles, .said last men! tioned means :being operativeto automatically release? onelslocking: means when rendered:operativel'fora rotating: the other: spindle;

. 8. A duplicator includingiac.drum mountedein frame..members,ashaft ineach; frame for rotat- 4533,. ably supporting 'itspadjacent end: member.cfithe. drum; 'ai duplicating; band on: the drum; spindles carriedbytherdrunrifortwinding; the ends. ofethea band thereon, a member forlocking each spindle against rotation in one direction, a pinion havinga cam portion mounted on one of said shafts and being axially movable toselectively rotate the spindles, said cam portion serving to release onelooking member upon axial movement of the shaft in a certain directionand to return the member to locking position upon movement of the shaftin the opposite direction.

9. A rotary duplicator comprising a frame, a duplicating cylinderjournaled in said frame, a plurality of spindles carried by saidcylinder, a duplicating band having its ends wound on said spindles, andmeans including a crank arm movable longitudinally of said cylinder forselectively driving said spindles.

10. A rotary duplicator comprising a frame, a duplicating cylinderjournaled in said frame, a plurality of spindles carried by thecylinder, a duplicating band having its ends wound around the spindles,a member rotatably and slidably mounted on the cylinder, and meanscarried by said cylinder and actuated by said member for selectivelydriving said spindles.

11. A rotary duplicator comprising a frame, a duplicating cylinderjournaled in said frame, a plurality of spindles carried by thecylinder, a 75 duplicating band having its ends wound around thespindles, spiral gears constrained to rotate with said spindles, amember rotatable with respect to said cylinder and movablelongitudinally thereof, a third spiral gear carried by said member andselectively engageable with said spiral gears on said spindles, and pawland ratchet means for holding said spindles against rotation inpredetermined directions.

12. 'A rotary duplicator comprising a frame, a duplicating cylinderjournaled in said frame, a plurality of spindles carried by thecylinder, a duplicating band'having its ends wound around the spindles,spiral gears operatively connected to said spindles, a third spiral gearslidably and rotatably journaled on said cylinder and selectivelyengageable with the spiral gears operatively connected to said spindles,and means carried vby said cylinder for preventing rotation of "saidspindles in predetermined directions.

-13. A rotary duplicator comprising a frame, a duplicating cylinderjournaled in said frame, a plurality of spindles carried by thecylinder, a duplicating band having its ends wound around the spindles,aslidably mounted member for rotating said cylinder, and means actuatedby said member for selectively rotating saidspindles.

14. A rotary duplicator comprising a frame, a duplicating cylinderjournaled in said frame, a

plurality of spindles carried by the cylinder, a

duplicating band having its ends wound'around the spindles, a member forrotating said cylinder, and means actuated by said member forselectively rotatingsaid spindles, said means being responsive to a.change in the direction of rotation spindles, means for rotating saidduplicating cylinder, and means actuated by said rotating means forselectively rotating the gears and spindles while said duplicatingcylinder remains stationary.

1'7. A rotary duplicator comprising a frame, a duplicating cylinderjournaled in the frame, a plurality of spindles carried by the cylinder,a duplicating band having its ends wound around said spindles, means forrotating said cylinder, means for locking said cylinder againstrotation, and means actuated by said rotating means for rotating one ofsaid spindles while said cylinder is locked against rotation.

18. A rotary duplicator comprising a frame, a duplicating cylinderjournaled in said frame, a plurality of spindles carried by thecylinder, a duplicating band having its ends wound around said spindles,means for locking said cylinder against rotation, means for rotatingsaid cylinder, and means including a plurality of gears actuated by saidrotating means for rotating one of said spindles while said cylinder islocked against rotation. V

19. In a duplicating machine, a frame, a duplicating drum journaled inthe frame, means for rotating said drum, a pair of spindles rotatablyjournaled in said drum, a duplicating band extending from one of saidspindles over a portion of said drum to the other spindle, means fordriving one of said spindles to advance said band, and means lockingsaid band advancing means against operation while the drum is rotating.

20. In a duplicating machine, a frame, a duplicating drum, a platenroller cooperating with said drum, means for causing a printing movementbetween said drum and said platen roller, a pair of spindles rotatablyjournaled in said drum, a duplicating band extending from one of saidspindles over a portion of said drum to the other of said spindles,means for rotating one of said spindles to advance said band, and meansfor locking said band advancing means against operation while said drumand said platen roller are cooperating in a printing movement.

CLIFFORD N. JOHNSON. ALFRED MARCHEV.

